Divining Water on Europa
Circumstantial evidence for water on Europa mounts as JPL scientists try an ingenious experiment to find hexagonal water-ice crystals on the frigid surface of Jupiter's iciest moon.

A Mid-Summer's Microbe Hunt
A team of explorers, including astrobiologist Richard Hoover and astronauts Jim Lovell and Owen Garriott, traveled to Antarctica in January 2000 to search for extreme-loving microbes.